Mold for casting solid type-wheels.



No. 636,378. I Patented No v. 7, I899.

: a. P. CONANT.

MOLD FUR CASTING SOLID TYPE WHEELS.

.(Application filed Jan. 21, 1899.)

{No Model.)

' UNITED STATES GEORGE P. CONANT,

PATENT OFFICE.

OF CHICAGO, ILLINOIS, ASSIGNOR TO CURTIS E. ROLEAU, OF SAME PLACE.

MOLD FOR CASTING souo TYPE-WHEELS.

SPECIFICATION forming part of Letters Patent N 0. 636,378, dated November 7, 1899.

Application filed January 21, 1899. Serial No. 702,912. (No model.)

To alZl whom it may concern:

Be it known that I, GEORGE P- CONANT, a citizen of the United States, residing at Chicago, in the-county of Cook and State of Illinois, have invented certain new and useful Improvements in Molds for Casting Solid Type-Wheels, of which the following is a specification.

This invention relates to improvements in molds for casting solid type-wheels; and it consists in certain peculiarities of the construction, novel arrangement, and operation of the various parts thereof, as will be hereinafter more fully set forth and specifically claimed.

The objects of my invention are, first, to provide a mold of the above-named character which shall be simple and inexpensive in construction and strong, durable, and effective in operation, and, second, such a mold which, by reason of the peculiar construction and operation of its parts, will produce perfect typewheels and can be so manipulated as to withdraw or remove the matrices from the casting in such a manner as to prevent any defacement of the type.

In order to enable others skilled in the art to which my invention pertains to make and use the same, I will now proceed to describe it, referring to the accompanying drawings, in which Figure l is a plan View of the mold and a portion of the casting-machine which supplies metal thereto, showing the parts in position to receive the melted metal and to form the casting. Fig. 2 is a longitudinal sectional view, partly in elevation, taken on line 2 2 of Fig. 1. Fig. 3' is a cross-sectional view taken on line 3 3 of Fig. 1, looking in the direction indicated by the arrows. Fig. dis an inverted perspective view of one of the matrix-bearing members. Fig. 5 is a perspective View of a solid type-wheel produced by my mold, and Fig. 6 is a detached plan view of two of the matrix-bearing members.

Similar letters refer to like parts throughout the different views of the drawings.

A represents a head-block which may be secured to a suitable support by means of bolts a, which pass vertically therethrough, so as to fit closely against that'portion of the casting-machine A from and by means of which the melted metal is conveyed to the mold. Passing horizontally through the head-block A is an adjustable mold-piece B, which is preferably cylindrical in shape and is provided with a cavity 1) of the form or shape to be given to the hub portion of the casting. The upper surface of the piece B is formed with a longitudinal recess 1), having its ends beveled, as is clearly shown in Fig. 2 of the drawings, and which is for the reception of the lower ends of the set-screws b and 11 which are located in the upper surface of the headblock and are employed for adjusting the mold-piece B as well as securing it in position. Extending horizontallyfrom the head-block rearwardly and in parallelism are two guiderods C, which are united at their ends by means of a plate C, and which rods comprise the supporting-frame of my mold. Movably located on each of the rods C is a sleeve D, which is secured at its rear ends to a plate or cross-piece D, which is provided with a central opening (2 for the reception of a tube E, whose front portion is formed as a core c of the form desired to be given to the hollow f of the type-wheel F, which is cast with a series of characters f on its periphery and has a tapering hub f as is clearly shown in Figs. 2 and 5 of the drawings. The front portion of the tube E is also provided with an annular shoulder e, which fits in an annular recess g of the sleeve G, whose rear end rests against the front surface of the plate D, which is tightened against said sleeve by means of the nut dT, located on the screw-threaded portion of the rear part of the tube E, through which extends an ejecting-rod H, whose front end is provided with a head It, the front part of which is rounded and the rear portion thereof beveled to fit in a correspondinglybeveled countersunk recess h" in the front end of the core.

The front portion of-the sleeve G is provided with an annular shoulder 9, against which the sliding ring I which surrounds said sleeve, will abut when in its forward position. The sleeve G is also provided in its front portion with a series of radial openings 9 for the reception and operation of the guide-pins m,

with which each of the members M is provided on its innersurface. Each of said members, which I will designate as matrix members, is provided in its inner front portion with a matrix m to form the desired letter or character. As is shown in Figs. 1 to 4, inclusive, of the drawings, these members are of substantially a keystone shape in cross-section and are located around the sleeve G. The rear portions of the matrix members M are inclined (see Figs. 2 and 4) and normally rest at their rear ends on a ring N, which is located on the sleeve G adjacent to the front surface of the plate D' and may be fixed in said position. Surrounding the outer surfaces of the matrix members M is a ring I, which is secured to the ring I by means of bolts 1', which pass through" slots 1" in some of the matrix members.

It will be observed by reference to Figs. 2 and 4 of the drawings that the outer surface of the ring I and the inner surface of the ring I are beveled to correspond to the inclination of the rear portion of the matrix members and that when slid back and forth on the sleeve Gsaid rings will cause the matrix members to move in radial lines.

Encircling the rear portion of the ejectingrod His a spring 7L2, whose front end rests against the rear end of the tube E and whose rear end is secured to said rod, thus rendering it spring-actuated. Pivotally secured to the plate or cross-piece G is a locking-bar L, the free end of which may be interposed between said plate and the rear surface of the plate D when the casting is being made.

From the foregoing and by reference to the drawings it will be seen and readily understood that by moving the rings I and I for- Wardly the matrix members M will be brought into position around the enlarged front portion of the sleeve E and there held by inserting a wedge N (which I have shown in the drawings as U shaped) between the rear edges of said rings and the front surface of the plate D, when the matrix members may be placed in the desired position on the mold-piece B by sliding the plate D forward and locking the same in position by means of the bar L, which is used for this purpose, at which time metal may be admitted to the mold through the opening a in the casting-machine, the spring 72/2 on the ejecting-rod H causing the same to close the front end of the core. After the metal has become set the locking-bar L may be removed, the plate D and the matrix members slid rearwardly on the rods 0, when the wedge N may be removed, the rings I and I drawn rearwardly, and the ejecting-rod pressed forward, which will remove the casting from the core, as is apparent.

\Vhen it is desired to make the type-wheels thicker or thinner, the mold-piece B may be moved forward or backward by loosening one of the screws 1) and b and tightening the other one, the inner ends of said screws resting on the beveled portions of the recess 1) in said piece, which operation will cause the piece to move in the direction desired. The guide-pins m, which, as before stated, project from the inner surface of each of the matrix members, will prevent said members falling out of alinemcnt when the rings I and I are retracted. The ring I may be provided on its sides with recesses i for the sleeves D, which will act as guides and serve to assist the bolts 1' to prevent the rings I and I turning:

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

'1. The combination with a mold-piece, of a core to project therein, a sleeve on the core, a ring to slide on the sleeve, a series of matrix members located longitudinally with the sleeve and having their rear portions inclined and on the outside of said ring, and another ring surrounding the series of matrix members, substantially as described.

2. The combination with a mold-piece, of a core to project therein, a sleeve on the core, a beveled ring to slide on the sleeve, a series of matrix members located longitudinally with the sleeve and having their rear portionsinclined and on the outside of said ring, and another ring surrounding the series of matrix members and secured to the first-named ring, substantially as described.

3. The combination with a mold-piece, of a core to project therein, a sleeve on the core, a beveled ring to slide on the sleeve, a series of matrix-carrying members located longitudinally with the sleeve and having their rear portions inclined and on the outside of said ring, and another beveled ring surrounding the series of matrix members and secured to the first-named ring, substantially as described.

4. The combination of an adjustable moldpiece, with a core to project therein, a sleeve on the core, a ring to slide on the sleeve, a series of matrix members located longitudinally with the sleeve and having their rear portions inclined and on the outside of said ring, and another ring surrounding the series of matrix members, substantially as described.

5. The combination with a mold-piece, of a tubular core to project therein, an ejectingrod extending through said core, a sleeve located on the tubular core, a ring to slide on the sleeve, a series of matrix-carrying members located longitudinally with the sleeve and having their rear portions inclined and 011 the outside of said ring, and another ring surrounding the series of matrix members, substantially as described.

6. The combination with a mold-piece, of a core to project therein, a sleeve on the core having an annular enlargement in its front portion provided with a series of radial openings, a ring to slide on the sleeve, a series of matrix members located longitudinally with the sleeve and having their rear portions inclined and on the outside of said ring and their front portions provided with pins or projections to fit within the openings of the sleeve, and another ring surrounding the series of matrix members and secured to the first-named ring, substantially as described. 7. The combination with an adjustable mold-piece, of a core to project therein, a bevpiece connecting the rear portion of said rods, a locking-bar pivotally secured on said crosspiece, a plate movably secured on said rods, a tubular core to project in said mold-piece and extending through said plate, an ejecting-rod located in the core, a sleeve on the core, a ring to slide on the sleeve, a series of matrix-bearing members located longitudinally with .the sleeve and having their rear portions inclined and on the outside of said ring, and another ring surrounding the series of matrix members and secured to the firstnamed ring, substantially as described.

GEORGE P. OONANT. Witnesses:

CHAS. O. TILLMAN, E. A. DUGGAN. 

